package com.hui.ruiji.controller;


import com.alibaba.druid.util.StringUtils;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.hui.ruiji.common.R;
import com.hui.ruiji.entity.Employee;
import com.hui.ruiji.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

@RestController
@Slf4j
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     *
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1.将页面提交的密码进行MD5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据用户页面提交查询用户名是否存在
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果没有查询结果，返回失败结果
        if (emp == null) {
            return R.error("登录失败");
        }

        //4.判断密码是否对
        if (!password.equals(emp.getPassword())) {
            return R.error("密码错误");
        }

        //5.查看员工状态是否禁用
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        //6.登录成功，将用户ID放到session
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        //1.清理session中保存的当前登陆员工的ID
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     *
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {

        log.info("提交的员工:{}", employee.toString());
        //设置初始密码
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //获得当前登录用户ID
        //Long id = (Long) request.getSession().getAttribute("employee");
        //employee.setCreateUser(id);
        //employee.setUpdateUser(id);

        employeeService.save(employee);
        return null;
    }

    /**
     * 员工分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page = {} pageSize = {} name = {}", page, pageSize, name);

        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //添加条件
        queryWrapper.like(!StringUtils.isEmpty(name), Employee::getName, name);

        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo, queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 根据ID来修改员工的信息
     *
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee) {

        log.info(employee.toString());
        Long empId = (Long) request.getSession().getAttribute("employee");
        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(empId);
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     * 根据ID查询员工信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        log.info("根据Id查员工信息");
        Employee employee = employeeService.getById(id);
        return R.success(employee);
    }
}
